Digital BW, The Print

I noticed on the MIS site under "News" the mention that the Full 
Spectrum quad inks can be use with either the Epson driver using John 
Woolf's workflow or with the Piezo driver.

They said,

"We had some confusion on the workflow by John Woolf. It has been 
corrected now. Thank you for your patience. If you use this with the 
Epson driver, it makes great quad tone prints. The Full Spectrum inks 
will work with either the Epson driver or the Cone driver."

Can someone give some first hand reports comparing the MIS FS inks 
and Piezo inks with the Piezo driver? Is this a less expensive way to 
get ink for your Piezo system?

Martin Wesley